Here is a link to a YouTube video playlist that Xiaoqi Zhao created that walks you through some basic steps using Protégé to create an ontology. This may be especially useful for users in China as he talks about how to use Chinese characters in Protégé. Also, for those who don't read comments, there is a GitHub site with supporting materials for the video tutorial here: https://github.com/yasenstar/protege_pizza
YouTube Videos for Protégé Tutorial
Updated: Aug 29, 2023
Thanks Michael for your encouragement, for all, here is the repository link for you to get model information as well as snapshot ontology per every exercise: https://github.com/yasenstar/protege_pizza, it gives you possibility to start learning & practicing this tutorial from any point you like, hope to give you some help. Good luck!